>Hi everybody,
>
>I checked a few discussions on unique validations in StackOverflow (too bad I can not add comments to them :() and I am still unsure of the best way to proceed.
>
>I see I am missing unique constraints in the table which I am going to add. But I think I also need a unique validation attribute.
>
>I am wondering what is the right way to implement unique validations in MVC application?
>
>Thanks in advance.

Haven't tried it but I'd go with the the 'Remote' atttribute. Example here: http://www.tugberkugurlu.com/archive/check-instantly-if-username-exists-asp-net-mvc-remote-validation